<template>
  <div>
    <el-dialog title="修改角色信息" :visible.sync="dialogFormVisible">
      <el-form v-model="selectedRole" style="text-align: left" ref="dataForm">
        <el-form-item label="角色名" label-width="120px" prop="username">
          <el-input v-model="selectedRole.name" autocomplete="off"></el-input>
        </el-form-item>
        <el-form-item label="角色描述" label-width="120px" prop="name">
          <el-input v-model="selectedRole.nameZh" autocomplete="off"></el-input>
        </el-form-item>
        <el-form-item label="功能配置" label-width="120px" prop="perms">
          <el-checkbox-group v-model="selectedPermsIds">
            <el-checkbox v-for="(perm, i) in perms" :key="i" :label="perm.id">{{
              perm.desc_
            }}</el-checkbox>
          </el-checkbox-group>
        </el-form-item>
        <el-form-item label="菜单配置" label-width="120px" prop="menus">
          <el-tree
            :data="menus"
            :props="props"
            show-checkbox
            :default-checked-keys="selectedMenusIds"
            node-key="id"
            ref="tree"
          >
          </el-tree>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button @click="dialogFormVisible = false">取 消</el-button>
        <el-button type="primary" @click="onSubmit(selectedRole)"
          >确 定</el-button
        >
      </div>
    </el-dialog>
    <el-row style="margin: 18px 0px 0px 18px">
      <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/admin/dashboard' }"
          >管理中心</el-breadcrumb-item
        >
        <el-breadcrumb-item>用户管理</el-breadcrumb-item>
        <el-breadcrumb-item>角色配置</el-breadcrumb-item>
      </el-breadcrumb>
    </el-row>
    <role-create @onSubmit="listRoles()"></role-create>
    <el-card style="margin: 18px 2%; width: 95%">
      <el-table
        :data="roles"
        stripe
        style="width: 100%"
        :max-height="tableHeight"
      >
        <el-table-column type="selection" width="55"> </el-table-column>
        <el-table-column prop="id" label="id" width="100"> </el-table-column>
        <el-table-column prop="name" label="角色名" fit> </el-table-column>
        <el-table-column prop="nameZh" label="角色描述" fit> </el-table-column>
        <el-table-column label="状态" width="100">
          <template slot-scope="scope">
            <el-switch
              v-model="scope.row.enabled"
              active-color="#13ce66"
              inactive-color="#ff4949"
              @change="(value) => commitStatusChange(value, scope.row)"
            >
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="120">
          <template slot-scope="scope">
            <el-button type="text" size="small" @click="editRole(scope.row)">
              编辑
            </el-button>
            <el-button type="text" size="small"> 移除 </el-button>
          </template>
        </el-table-column>
      </el-table>
      <div style="margin: 20px 0 20px 0; float: left">
        <el-button>取消选择</el-button>
        <el-button>批量删除</el-button>
      </div>
    </el-card>
  </div>
</template>

<script>
import RoleCreate from "./RoleCreate";
export default {
  name: "UserRole",
  components: { RoleCreate },
  data() {
    return {
      dialogFormVisible: false,
      roles: [],
      perms: [],
      menus: [],
      selectedRole: [],
      selectedPermsIds: [],
      selectedMenusIds: [],
      props: {
        id: "id",
        label: "nameZh",
        children: "children",
      },
    };
  },
  mounted() {
    this.listRoles();
    this.listPerms();
    this.listMenus();
  },
  computed: {
    tableHeight() {
      return window.innerHeight - 320;
    },
  },
  methods: {
    listRoles() {
      var _this = this;
      this.$axios.get("/admin/role").then((resp) => {
        if (resp && resp.status === 200) {
          _this.roles = resp.data.result;
        }
      });
    },
    listPerms() {
      var _this = this;
      this.$axios.get("/admin/role/perm").then((resp) => {
        if (resp && resp.data.code === 200) {
          _this.perms = resp.data.result;
        }
      });
    },
    listMenus() {
      var _this = this;
      this.$axios.get("/admin/role/menu").then((resp) => {
        if (resp && resp.data.code === 200) {
          _this.menus = resp.data.result;
        }
      });
    },
    commitStatusChange(value, role) {
      if (role.id !== 1) {
        this.$confirm("是否更改角色状态？", "提示", {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning",
        })
          .then(() => {
            this.$axios
              .put("/admin/role/status", {
                enabled: value,
                id: role.id,
              })
              .then((resp) => {
                if (resp && resp.data.code === 200) {
                  if (value) {
                    this.$message("角色 [" + role.nameZh + "] 已启用");
                  } else {
                    this.$message("角色 [" + role.nameZh + "] 已禁用");
                  }
                }
              });
          })
          .catch(() => {
            role.enabled = !role.enabled;
            this.$message({
              type: "info",
              message: "已取消",
            });
          });
      } else {
        role.enabled = true;
        this.$alert("无法禁用系统管理员！");
      }
    },
    editRole(role) {
      this.dialogFormVisible = true;
      this.selectedRole = role;
      let permIds = [];
      for (let i = 0; i < role.perms.length; i++) {
        permIds.push(role.perms[i].id);
      }
      this.selectedPermsIds = permIds;
      let menuIds = [];
      for (let i = 0; i < role.menus.length; i++) {
        menuIds.push(role.menus[i].id);
        for (let j = 0; j < role.menus[i].children.length; j++) {
          menuIds.push(role.menus[i].children[j].id);
        }
      }
      this.selectedMenusIds = menuIds;
      // 判断树是否已经加载，第一次打开对话框前树不存在，会报错。所以需要设置 default-checked
      if (this.$refs.tree) {
        this.$refs.tree.setCheckedKeys(menuIds);
      }
    },
    onSubmit(role) {
      let _this = this;
      // 根据视图绑定的角色 id 向后端传送角色信息
      let perms = [];
      for (let i = 0; i < _this.selectedPermsIds.length; i++) {
        for (let j = 0; j < _this.perms.length; j++) {
          if (_this.selectedPermsIds[i] === _this.perms[j].id) {
            perms.push(_this.perms[j]);
          }
        }
      }
      this.$axios
        .put("/admin/role", {
          id: role.id,
          name: role.name,
          nameZh: role.nameZh,
          enabled: role.enabled,
          perms: perms,
        })
        .then((resp) => {
          if (resp && resp.data.code === 200) {
            this.$alert(resp.data.result);
            this.dialogFormVisible = false;
            this.listRoles();
          }
        });
      this.$axios
        .put("/admin/role/menu?rid=" + role.id, {
          menusIds: this.$refs.tree.getCheckedKeys(),
        })
        .then((resp) => {
          if (resp && resp.data.code === 200) {
            console.log(resp.data.result);
          }
        });
    },
  },
};
</script>

<style scoped>
.add-button {
  float: left;
  margin: 18px 0 18px 10px;
}
</style>
